Venmathi Maran, B.A., Tang, D., Madinabeitia, I., Izawa, K., Ohtsuka, S., Jang, D.J., and Nagasawa, K.
A redescription of the chondracanthid copepodPseudacanthocanthopsis secunda(Yamaguti and Yamasu, 1960) is provided based on adult females collected from the Indian perch,Apogon lineatusTemminck and Schlegel, 1842, captured in the Seto Inland Sea, Japan, and the East China Sea off Japan and Korea, along with additional material from the fine-patterned pufferTakifugu poecilonotus(Temminck and Schlegel, 1850) and red seabreamPagrus major(Temminck and Schlegel, 1843) captured in the Seto Inland Sea. The male ofP. secundais also described for the first time. Our results revealed thatP. secundais a valid member ofPseudacanthocanthopsis, and it can be distinguished from the other three congeners by having one ventrolateral and two anterior pairs of rounded head processes, a reniform trunk, a double row of teeth along the concave margin of the mandible and a lateral swelling on the leg 1 protopod in the female.http://www.zoobank.org/urn:lsid:zoobank.org:pub:7AD5211F-66EF-464A-B9C9-E21C19ECFDC7 [ABSTRACT FROM AUTHOR]